private void btnChange_Click(object sender, EventArgs e)
{
clsAdmin admin = new clsAdmin();
if (admin.Change_Password(txtID.Text, txtOldPW.Text, txtNewPW.Text))
{
MessageBox.Show("Password for UserID : " + userid + " is changed.", "Successful!");
this.Close();
}
else
{
MessageBox.Show("Password for UserID : " + userid + " is not changed.", "Check your password again!");
}
}